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Commit 7eb4f044 by Nathan Sidwell Committed by Richard Sandiford
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200x-xx-xx Nathan Sidwell <nathan@codesourcery.com> Richard Sandiford <richard@codesourcery.com> 

gcc/
200x-xx-xx  Nathan Sidwell  <nathan@codesourcery.com>
	    Richard Sandiford  <richard@codesourcery.com>

	* doc/invoke.texi: Document the macros that are defined by
	m68k's -mtune and -mhard-float options.
	* config/m68k/m68k-protos.h (m68k_cpp_cpu_ident) Declare.
	(m68k_cpp_cpu_family): Likewise.
	* config/m68k/m68k.h (TARGET_CPU_CPP_BUILTINS): Add a full set
	of __ucfv*__ macros.  Define __mcffpu__ if generating code for
	ColdFire FPUs.  Define __mcf_cpu_* and __mcf_family_* macros.
	* config/m68k/m68k.c (m68k_cpp_cpu_ident): New function.
	(m68k_cpp_cpu_family): Likewise.

Co-Authored-By: Richard Sandiford <richard@codesourcery.com>

From-SVN: r120716
parent 9321405c
Showing with 89 additions and 3 deletions
gcc/ChangeLog
2007-01-12 Nathan Sidwell <nathan@codesourcery.com>
Richard Sandiford <richard@codesourcery.com>
* doc/invoke.texi: Document the macros that are defined by
m68k's -mtune and -mhard-float options.
* config/m68k/m68k-protos.h (m68k_cpp_cpu_ident) Declare.
(m68k_cpp_cpu_family): Likewise.
* config/m68k/m68k.h (TARGET_CPU_CPP_BUILTINS): Add a full set
of __ucfv*__ macros. Define __mcffpu__ if generating code for
ColdFire FPUs. Define __mcf_cpu_* and __mcf_family_* macros.
* config/m68k/m68k.c (m68k_cpp_cpu_ident): New function.
(m68k_cpp_cpu_family): Likewise.
2007-01-12 Richard Sandiford <richard@codesourcery.com>
* config/m68k/m68k.h (TARGET_CPU_CPP_BUILTINS): Treat all mc68*
......
gcc/config/m68k/m68k-protos.h
......@@ -61,5 +61,7 @@ extern bool m68k_regno_mode_ok (int, enum machine_mode);
extern int flags_in_68881 (void);
extern bool use_return_insn (void);
extern void override_options (void);
extern const char *m68k_cpp_cpu_ident (const char *);
extern const char *m68k_cpp_cpu_family (const char *);
extern void init_68881_table (void);
extern int m68k_hard_regno_rename_ok(unsigned int, unsigned int);
gcc/config/m68k/m68k.c
......@@ -540,6 +540,30 @@ override_options (void)
SUBTARGET_OVERRIDE_OPTIONS;
}
/* Generate a macro of the form __mPREFIX_cpu_NAME, where PREFIX is the
given argument and NAME is the argument passed to -mcpu. Return NULL
if -mcpu was not passed. */
const char *
m68k_cpp_cpu_ident (const char *prefix)
{
if (!m68k_cpu_entry)
return NULL;
return concat ("__m", prefix, "_cpu_", m68k_cpu_entry->name, NULL);
}
/* Generate a macro of the form __mPREFIX_family_NAME, where PREFIX is the
given argument and NAME is the name of the representative device for
the -mcpu argument's family. Return NULL if -mcpu was not passed. */
const char *
m68k_cpp_cpu_family (const char *prefix)
{
if (!m68k_cpu_entry)
return NULL;
return concat ("__m", prefix, "_family_", m68k_cpu_entry->family, NULL);
}
/* Return nonzero if FUNC is an interrupt function as specified by the
"interrupt_handler" attribute. */
......
gcc/config/m68k/m68k.h
......@@ -107,6 +107,26 @@ Boston, MA 02110-1301, USA. */
builtin_define_std ("mc68020"); \
break; \
\
case ucfv2: \
builtin_define ("__mcfv2__"); \
break; \
\
case ucfv3: \
builtin_define ("__mcfv3__"); \
break; \
\
case ucfv4: \
builtin_define ("__mcfv4__"); \
break; \
\
case ucfv4e: \
builtin_define ("__mcfv4e__"); \
break; \
\
case ucfv5: \
builtin_define ("__mcfv5__"); \
break; \
\
default: \
break; \
} \
......@@ -116,7 +136,16 @@ Boston, MA 02110-1301, USA. */
\
if (TARGET_COLDFIRE) \
{ \
const char *tmp; \
\
tmp = m68k_cpp_cpu_ident ("cf"); \
if (tmp) \
builtin_define (tmp); \
tmp = m68k_cpp_cpu_family ("cf"); \
if (tmp) \
builtin_define (tmp); \
builtin_define ("__mcoldfire__"); \
\
if (TARGET_ISAC) \
builtin_define ("__mcfisac__"); \
else if (TARGET_ISAB) \
......@@ -152,10 +181,11 @@ Boston, MA 02110-1301, USA. */
break; \
} \
} \
if (m68k_tune == ucfv4e) \
builtin_define ("__mcfv4e__"); \
} \
\
if (TARGET_COLDFIRE_FPU) \
builtin_define ("__mcffpu__"); \
\
if (TARGET_CF_HWDIV) \
builtin_define ("__mcfhwdiv__"); \
\
......
gcc/doc/invoke.texi
......@@ -10328,6 +10328,10 @@ below, which also classifies the CPUs into families:
@var{arch} is compatible with @var{cpu}. Other combinations of
@option{-mcpu} and @option{-march} are rejected.
gcc defines the macro @samp{__mcf_cpu_@var{cpu}} when ColdFire target
@var{cpu} is selected. It also defines @samp{__mcf_family_@var{family}},
where the value of @var{family} is given by the table above.
@item -mtune=@var{tune}
@opindex mtune
Tune the code for a particular microarchitecture, within the
......@@ -10343,6 +10347,17 @@ to run relatively well on 68020, 68030 and 68040 targets.
as well. These two options select the same tuning decisions as
@option{-m68020-40} and @option{-m68020-60} respectively.
gcc defines the macros @samp{__mc@var{arch}} and @samp{__mc@var{arch}__}
when tuning for 680x0 architecture @var{arch}. It also defines
@samp{mc@var{arch}} unless either @option{-ansi} or a non-GNU @option{-std}
option is used. If gcc is tuning for a range of architectures,
as selected by @option{-mtune=68020-40} or @option{-mtune=68020-60},
it defines the macros for every architecture in the range.
gcc also defines the macro @samp{__m@var{uarch}__} when tuning for
ColdFire microarchitecture @var{uarch}, where @var{uarch} is one
of the arguments given above.
@item -m68000
@itemx -mc68000
@opindex m68000
......@@ -10465,7 +10480,9 @@ The option is equivalent to @option{-march=68020} @option{-mtune=68020-60}.
@opindex mhard-float
@opindex m68881
Generate floating-point instructions. This is the default for 68020
and above, and for ColdFire devices that have an FPU.
and above, and for ColdFire devices that have an FPU. It defines the
macro @samp{__HAVE_68881__} on M680x0 targets and @samp{__mcffpu__}
on ColdFire targets.
@item -msoft-float
@opindex msoft-float
......
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